Realty: There is no difference. From my own personal experience of teaching both children and adults since 1975, this idea that a child’s brain is more receptive is incorrect. What may be true is that the child is less encumbered by the busy-ness of life and tends to have less mental clutter. This state results in a naturally-better focusing ability which creates the illusion that the child may be able to absorb new material faster than the adult.
However, what the child often doesn’t have is desire. The adult really wants to study piano. And this great desire creates the same type of focus that is needed for quick learning. In fact, adults who have this intention, often from wanting to make up “for lost time,” often learn faster than children! The adult who is just a dabbler who doesn’t have the great desire is a typical hectic, frazzled adult. This type of adult is the adult who will tend to learn slower — not because they don’t practice enough, but because their energy is so distracted.
Another cause of distraction is self-judgement and stress and impatience that is associated with learning. Adults have had their lifetimes to become familiar with music so they know how it is “supposed” to sound, whereas children usually have never heard the piece they are learning. As a result, adults do tend to become easily frustrated by comparing their current ability to play a piece with the way they know it should sound — and THIS comparison can cause enough stress and anxiety that the adult student will often lose interest or stop playing altogether.
So adult students need to take caution about this unnecessary temptation to think they “should” sound like a professional pianist after only playing for three weeks. The adult student must learn to embrace his or her current ability with grace and appreciation. From this point improvement will occur.
– piano teacher Howard Richman.